Justin Steffener, PSY.D.
Clinical Psychologist · Mill Creek, WA
Justin Steffener, PSY.D. is a clinical psychologist with a practice address in Mill Creek, Washington, and NPI 1013218767, issued on Nov 11, 2010. Check the license (Washington PY60447862, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Justin Steffener
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License numbers
- PY60447862 WA
MC60197538 WA
Self-reported in NPPES; status is on the state search - Practice location
- 15418 Main St, Mill Creek, WA 98012
- Phone
- (425) 339-5453
- Enumerated
- Nov 11, 2010
- Record last updated
- Mar 7, 2023
- Fax
- (425) 225-8028
- Medicaid ID
- 2061671 WA
- Medicare enrollment
- Enrolled (PECOS I20160805000640); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,675 in Washington → Look up another NPI →
Also registered at 15418 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brianna Baublitz, DNP, ARNPFamily Nurse Practitioner1073206520
- Jeffrey Bissey, MDInternal Medicine Physician1700840832
- Jessica Brandt, ARNPNurse Practitioner1063726701
- Jody Friday, PA-CPhysician Assistant1306916333
- Stephanie Garrison, PSYDClinical Psychologist1558599274
- Jennifer Gross, PSYDClinical Psychologist1023197951
Verify Justin Steffener in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PY60447862Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Optum Care Washington PLLCMill Creek, WA
- The Center For Psychological Health LLCSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Steffener among 1,675 clinical psychologist records in Washington
Justin Steffener, PSY.D. is one of 1,675 clinical psychologist records with a practice address in Washington. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 52% of them.
- NPI issued2010 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 13% of these records are
- In the CMS Doctors and Clinicians fileYes · 23% of these records are
- Graduated2012 · median 2009 among the 386 with a school on file
- Record last updated2023 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 clinical psychologist records list a practice address in Mill Creek
They are 12 of the 554 NPPES records with a practice address in Mill Creek, and 1,675 clinical psychologist records in Washington.
All 1,675 in Washington → Every provider in Mill Creek → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Adrianne Altman, PH.D.Mill Creek, WA 980121730365776
- Matthew De Haan, PSY.D.Mill Creek, WA 980121578870648
- Stephanie Garrison, PSYDMill Creek, WA 980121558599274
- Barbara Graham, PH.D.Mill Creek, WA 980121528390424
- Jennifer Gross, PSYDMill Creek, WA 980121023197951
- Susan Johannsen, PSYDMill Creek, WA 980121063026417
- Megan Merriwether, PH.D., CDPMill Creek, WA 980121225209190
- Christian Quayle, PH.D.Mill Creek, WA 980121558438952
Common questions
What is Justin Steffener, PSY.D.'s NPI number?
Justin Steffener, PSY.D.'s National Provider Identifier (NPI) is 1013218767, issued on Nov 11, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Justin Steffener, PSY.D. located?
The NPPES record lists a practice address at 15418 Main St, Mill Creek, WA, 98012. Phone: (425) 339-5453. Providers update this record themselves, so call before visiting.
How can I verify Justin Steffener, PSY.D.'s license?
NPPES lists Washington license number PY60447862, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.